University of Wisconsin-Madison | Botany Plant Growth Facilities

Botanical Garden

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Genus: Tithonia Species: rotundifolia Common Name: Mexican Sunflower Family: Asteraceae Order: Asterales Native: Central America Habit: Herbaceous Perennial Height: 2 to 6 feet Width: 2 to 4 feet Flowering Season: Summer to Fall Flower Color: Orange or red Propagation: Seed Zone: 9-11 Note: Mexican Sunflower is suitable for backgrounds and borders. Monitor plant for powdery mildew and leaf spots. Prefers sunny, moderately dry, well-drained, regular garden soil.